@v5x/web is the browser workflow layer built on top of @v5x/serial. It owns Web Serial support detection, connection lifecycle, snapshot state, subscriptions, explicit refresh, and normalized errors. 
import { createV5Client } from "@v5x/web";

const client = createV5Client();

client.subscribe(() => {
  console.log(client.getSnapshot());
});

await client.connect();
The package has no required React, Svelte, or Solid dependency. Use it directly for vanilla browser code, or import a framework binding from @v5x/web/react, @v5x/web/svelte, or @v5x/web/solid when your app already uses that framework. Web Serial requires a browser that implements the API and a secure context such as HTTPS or localhost. Browser permission prompts must be triggered from a user gesture, so call connect() from a click or similar interaction. @v5x/web does not replace @v5x/serial; it builds a small application-state contract on top of the serial device API.